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X86: support fpext/fptrunc operations to and from 16-bit floats.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@213374 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -529,6 +529,11 @@ void X86TargetLowering::resetOperationActions() {
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setOperationAction(ISD::FP_TO_FP16, MVT::f64, Expand);
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setOperationAction(ISD::FP_TO_FP16, MVT::f80, Expand);
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setLoadExtAction(ISD::EXTLOAD, MVT::f16, Expand);
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setTruncStoreAction(MVT::f32, MVT::f16, Expand);
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setTruncStoreAction(MVT::f64, MVT::f16, Expand);
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setTruncStoreAction(MVT::f80, MVT::f16, Expand);
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if (Subtarget->hasPOPCNT()) {
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setOperationAction(ISD::CTPOP , MVT::i8 , Promote);
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} else {
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@ -25,3 +25,45 @@ define void @test_bitcast_to_half(half* %addr, i16 %in) {
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store half %val_fp, half* %addr
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ret void
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}
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define float @test_extend32(half* %addr) {
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; CHECK-LABEL: test_extend32:
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; CHECK-LIBCALL: jmp __gnu_h2f_ieee
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; CHECK-FP16: vcvtph2ps
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%val16 = load half* %addr
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%val32 = fpext half %val16 to float
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ret float %val32
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}
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define double @test_extend64(half* %addr) {
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; CHECK-LABEL: test_extend64:
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; CHECK-LIBCALL: callq __gnu_h2f_ieee
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; CHECK-LIBCALL: cvtss2sd
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; CHECK-FP16: vcvtph2ps
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; CHECK-FP16: vcvtss2sd
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%val16 = load half* %addr
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%val32 = fpext half %val16 to double
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ret double %val32
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}
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define void @test_trunc32(float %in, half* %addr) {
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; CHECK-LABEL: test_trunc32:
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; CHECK-LIBCALL: callq __gnu_f2h_ieee
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; CHECK-FP16: vcvtps2ph
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%val16 = fptrunc float %in to half
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store half %val16, half* %addr
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ret void
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}
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define void @test_trunc64(double %in, half* %addr) {
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; CHECK-LABEL: test_trunc64:
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; CHECK-LIBCALL: callq __truncdfhf2
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; CHECK-FP16: callq __truncdfhf2
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%val16 = fptrunc double %in to half
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store half %val16, half* %addr
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ret void
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}
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